Scanning Probe Microscopy

Scanning Probe Microscopy

The research group scanning probe microscopy (SPM) has been established with a focus on high-resolution local structure measurements on model systems for heterogeneous catalysis. Well defined crystalline and amorphous thin oxide film systems have been developed and characterized by atomic resolution scanning probe microscopy and spectroscopy to gain insight into local structural environments for chemical reactions taking place at these surfaces.

Electrocatalytic reactions, such as water oxidation and carbon dioxide reduction, that are being pursued by the Department of Interface Science could be significantly affected by the use of these films on the surface of the catalyst. Stabilization of the catalyst from degradation and erosion is an ongoing area of interest. Furthermore, modification of metal single crystal electrodes with a two-dimensional barrier layer is proposed as a model system to address structural and chemical alterations that could occur during electrochemical reactions that might lead to changes in their activity and selectivity. Chemical and structural effects created by two-dimensional overlayers is a hot topics in this research direction.

Group Members

Dr. Jared P. Bruce

Felix Landwehr

Dr. Juan Jesus Navarro

Khanh-Ly Nguyen

Jens Hartmann

Gero Thielsch

Recent Publications

Juan Jesus Navarro, Mowpriya Das , Sergio Tosoni, Felix Landwehr, Maximilian Koy, Markus Heyde, Gianfranco Pacchioni, Frank Glorius, and Beatriz Roldan Cuenya, "Growth of N-Heterocyclic Carbene Assemblies on Cu(100) and Cu(111): from Single Molecules to Magic-Number Islands," Angewandte Chemie International Edition , e202202127 (2022).
Kristen M. Burson, Hyun Jin Yang, Daniel S. Wall, Thomas Marsh, Zechao Yang, David Kuhness, Matthias Brinker, Leonard Gura, Markus Heyde, Wolf-Dieter Schneider, and Hans-Joachim Freund, "Mesoscopic Structures and Coexisting Phases in Silica Films," The Journal of Physical Chemistry C 126 (7), 3736-3742 (2022).
Leonard Gura, Zechao Yang, Joachim Paier, Florian Kalass, Matthias Brinker, Markus Heyde, and Hans-Joachim Freund, "Resolving atomic diffusion in Ru(0001)−O(2×2) with spiral high-speed scanning tunneling microscopy," Physical Review B 105 (3), 035411 (2022).
Leonard Gura, Zechao Yang, Matthias Brinker, Florian Kalass, William Kirstädter, Patrik Marschalik, Heinz Junkes, Markus Heyde, and Hans-Joachim Freund, "Spiral high-speed scanning tunneling microscopy: Tracking atomic diffusion on the millisecond timescale," Applied Physics Letters 119 (25), 251601 (2021).
Fabian Scholten, Khanh-Ly Claudia Nguyen, Jared P. Bruce, Markus Heyde, and Beatriz Roldan Cuenya, "Identifying structure-selectivity correlations in the electrochemical reduction of CO2: a comparison of well-ordered atomically-clean and chemically-etched Cu single crystal surfaces," Angewandte Chemie International Edition 60 (35), 19169-19175 (2021).
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